Where is all the electricity going to come from for charging these vehicles?
Coal Power stations,
Wind generators,
Solar panels,
Nuclear power stations,
Gas power stations,
Fission generators
The same places that provide it now, in fact it will be easier to supply, because there will be more base power generation needed, base being generation that can’t be quickly stopped or started, because currently electricity use ramps down hugely in the evening, and ramps up hugely around 7am when everyone puts the kettle on, and they have to bridge the gap using Gas powered generators, hydro electric generators.
In fact they could use EV to balance the grid more effectively, by useing them as a battery backup for peak times.